Suction cleaner



Aug. 31, 1943. B. c. BECKER SUCT ION CLEANER 2 Sheets-Sheet 1 Filed Dec. 9, 1940 :NVENTOR Bernard ifleaker p ecegs ed I I X f Y m Mm e x Q 5 m V r w m i I nw.

5 WMNW B. C. BECKER SUCTION CLEANER Filed Dec. 9, 1940 Aug. 31, 1943.

2 Sheets-Sheet 2 mm/ mm M m m By Be BY her, Execu/rIx M y 170W Patented Aug. 31, 1943 SUCTION CLEANER Bernard C. Becker, deceased, late of Canton, Ohio, by Bernice E. Becker, execntrlx, York, Pa., assignor to The Hoover Company, North Cantom'Ohlo, a corporation of Ohio Application December 9, 1940, Serial No. 369,222

1 Claim. (Cl. 1516) The present invention relates to suction cleaners in general and particularly to improvements to be embodied in a suction cleaner to reduce the overa11 height of the cleaner.

It is an object of the invention to provide a new and improved suction cleaner. Another object is to provide a cleaner casing composed of two complementary molded sections, separated along the vertical median line of the cleaner casing to facilitate assembly of the cleaner mechanism. A further object is to provide a casing for arranging a motor-fan unit in a downwardly rearwardly inclined position, and the motor field coil below the armature in the space provided bythe inclined position of the motor-fan unit. Other object and advantages of the invention will appear in the specification and drawings, wherein:

Figure l is a side elevational view of a suction cleaner, and

Figure 2 is an elevational sectional view 01 one casing section taken approximately on the meeting edge between the two casing sections.

The suction cleaner herein disclosed comprises a main casing i6, formed of two complementary casing sections II and I2 which are bolted together along the vertical median line of the main cleaner casing. Each casing section is preferably produced by a molding process using "Bakelite or other type of plastic, and which is so molded as to eliminate side cores during th molding process.

The main casing is provided with a top wall having a substantially horizontal rear portion 13 and a downwardly forwardly inclined front wall 14 which terminates in a nozzle l5 formed by front and rear lips i6 and I1, respectively. A suction passageway I8 extends upwardly and rearwardly from the nozzle lips as shown in Figure 2, to the fan eye IQ of a fan chamber 20. The suction passageway I8 is defined by the upwardly inclined top wall l4 of the casing 10, and by the side walls 22, 22 of the cleaner casing, and by a partition 23 which extends upwardly and rearwardly from the rear nozzle lip [1. The top wall of the fan chamber 26 is defined by the partition 23 and a portion of the substantially horizontal top casing wall I3, the side wall being formed by a partition 24 depending from the partition 23, the latter extending to the main casing side walls 22, 22. Another partition 25 forms the bottom wall of the fan chamber and also serves as the top .wall of a motor housing 26. Communicating with the fan chamber 26 is an exhaust passageway 21 defined by the substantially horizontal top casing wall l3, casing side walls 22, 22 and by a substantially horizontal continuation 26 of the upwardly rearwardly inclined bottom wall 25 of the fan chamber 20. A dust bag 30 is removably attached to a bag fiange 3| at the end of the exhaust passageway 21.

The motorhousing 26 is arranged at the rear of the cleaner casing between the fan chamber 20 and the exhaust passageway 21, the main casin rear wall 33 and the casing bottom wall 34. A motor 35 is arranged in the housing 26 and has its axis disposed in a downwardly and rearwardly inclined direction with respect to the cleaner nozzle 15. The upper end of the motor 35 is supported by a bearing 36 secured by screws 31 in the fan chamber bottom wall 25, while the lower end of the motor is supported by a bearing 38 secured to a side wall of the main casing by means of screws 39. The motor is provided with an armature shaft 46, commutator 4 l, a U-shaped stator 42, about whicha single field coil 43 is arranged. As shown in Figure 2, the commutator 4| is disposed substantially in the lower rear comer of the cleaner casing l0, and the field coil 43 is arranged at substantially the midsection of the casing in the space 45 formed between the fan chamber bottom wall 25 and the casing bottom wall 34, the space 45 being formed as a result of theinclination of the motor 35. The .field stack 46 is rigidly supported in the housing 26 by means of brackets 46 mounted by screws 49 on the side wall 22 of the casing section II.- The motor housing 26 i so molded as to provide molded recesses 56 to accommodate motor brushes 5|, 5|, and suitable cavities 52 are also provided to receive the motor circuit conductors 53.

a In order to cool the motor 35, a ventilating fan 54 is mounted on the motor shaft 46 and is arranged in a fan chamber 55 molded in the main casing, the fan chamber 55 communicating with a molded exhaust passageway 56 which'has its outlet 56 in the rear wall 33 of the main casing. Air inlet openings 59, 59 are provided in each side wall 22 of the main casing adjacent the field coil 43, whereby the ventilating fan 54 draws air through the inlet openings and then over the motor into the Ian chamber 55 and discharges the air through the passageway 56, to thereby cool the motor.-

Due to the inclined position of the motor 35 and the single field coil 43 being arranged below the armature and along the bottom wall 34 of the main casing, there is provided ample space at the opposite side of the armature to accommodate e rodio interference cehrleitor ee which functions to reduce interference with redid re ception when the cleaner is opereted.

A suction ion H is disposed in the fan ehem= her it end is rotated by the motor it which else rotates a pulley 62 for driving e, surface ecgitet ins member 33 in the some it by means of e belt se arranged in'the suction passageway it The cleaner casing in is supported on front wheels 85, mounted on a. shaft to disposed forwerdly of the motor, and on rear wheels or mounted on a sheit B8 errensed at the lower rear corner of the cleaner cosine.

In order to convert the cleaner from on-theiioor type to on ofl-the-floor type cleaner, e converter opening It is provided in the inclined casing top wall ll opposite the fan eye it, end is normally closed by a removable cover plate ii.

The cleaner is propelled over the surface to be cleaned by a handle 12 having a hell is pivotally mounted along the casing side walls by means of a shaft 14 extending through the body of the cleaner casing. Handle position controlling means are provided and comprise an arcuate sector 15 attached to the side wall 22 of the cleanercasing section l2 and e. spring-pressed roller 16 carried by an arm of the handle ball 13. The sector 15 is provided with spaced recesses 11 for receiving the spring-pressed roller 16 to maintain the handle in different adjusted positions.

In order to assemble the cleaner, the motor 35 and fan 6| are mounted in casing section E l md thereeiter the cosine section it is bolted vthereto by means oi bolts dd extending through both cosine sections. The agitator $3 is then mounted in the nozzle it end the belt 6 connected to the motor pulley 62, end the handle 172 is pivotelly mounted on the shaft it.

From the foregoing: it will be perceived that e unicoii motor is errenged in e downwardly reerwerdly inclined position, whereby the fen chamber is inclined end the field coil is disposed completely at one side end below the armature to provide at space at the opposite side of the armature for other parts of the cleaner mechenism, to thereby reduce the overall height of the cleaner.

lllfhet is claimed is:

' A suction cleaner comprising, a casing having a nozzle and connected fan chamber, a. housing in said casing extending rearwerdly downwardly from said fen chamber, e motor downwardly V rearwardly inclined in said housing for operating "a. fan in said fan chamber, one side of the motor armature being substantially contiguous to the top side wall of said housing to provide a space in the lower portion of said housing between said armature and the bottom side wall of said housing, and means for supporting the motor field stack and field coil in said space at the lower portion of said housing to distribute the motor weight to the lower portion of the cleaner.

BERNICE E. BECKER, Erecutria: of the Estate of Bernard 0. Becker,

Deceased. 

